As of July 1, 1913, the corporate limits of the sanitary district of Chicago are hereby extended so as to embrace and include within the same, the territory and tracts of land situated in the County of Cook and State of Illinois, hereinafter described as follows:
     Sections twenty-one (21), twenty-two (22), twenty-three (23), twenty-six (26), twenty-seven (27), thirty-five (35), and thirty-six (36) in Township forty (40) north, Range twelve (12) east of the third principal meridian; sections one (1), two (2), three (3), four (4), nine (9), ten (10), eleven (11), twelve (12), thirteen (13), fourteen (14), fifteen (15), sixteen (16), twenty-two (22), twenty-three (23), twenty-four (24), twenty-five (25), twenty-six (26), twenty-seven (27), thirty-five (35) and thirty-six (36) in Township thirty-nine north, Range 12, east of the third principal meridian, in the County of Cook and State of Illinois; and in addition thereto any portion or portions of the incorporated villages of Franklin Park, River Grove, Melrose Park, Maywood, River Forest, Forest Park, Riverside and Bellwood which may not be included in the above description.